Hackerspaces
are community-operated physical places, where people share their
interest in tinkering with technology, meet and work on their projects,
and learn from each other.

hackerspaces.org is an informal volunteer network of such spaces,
maintaining community services - including a wiki for everyone who wants to share their
hackerspace stories and questions,
mailing lists, XMPP services, a blog and a feed aggregator, and many others. From
around the world,
hackers
meet on the Freenode IRC channel
#hackerspaces.